5000S Wagon L5-2309cc 2.3L SOHC (NF) (1988)
Vacuum Harness HVAC: All Technical Service Bulletins
A/C - Operates In Defrost Mode Only
Applies To:
5000/5000 TURBO 1984-1988
Subject:
Oil in Programmer ^ Modifying
Vacuum Supply System
Number:
Group:
89-01
87
August 25, 1989
Climate Control
Engine oil, drawn into the A/C programmer via vacuum supply, could cause the programmer to malfunction.
The most common symptom of (programmer) oil contamination is the climate control system operating in the defrost mode ONLY (fail safe).
If oil contamination has caused the programmer to fail you will have to replace it.
The following procedure will prevent oil from entering the new programmer.
Oil contamination, checking
^
remove nut and disconnect vacuum hose/ connector assembly 4
^
inspect inside surfaces of connector for presence of oil (arrow)
If oil is present, ^ replace vacuum hose/connector assembly 4
^
Part No. 443 820 663 A (up to VIN 44F 200 000) or
^
Part No. 443 820 663 C (from VIN 44F 200 001)
^
replace climate control programmer and adjust, see Repair Manual Audi 5000 1984-1988, Repair Group 87
^
Part No. 443 820 503 (Up to VIN 44G 053 400)
^
Part No. 443 820 503A (From VIN 44G 053 401)